US3170637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating sewage
Assignee: Individual
•
Filing: 1963-06-12
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Granted: 1965-02-23
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Expires: 1983-06-12
Abstract
No abstract record available.
Inventors
- 👤 Aubrey C Nowlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:01
CPC Classifications
B; B02; B02C; B02C18/00; B02C18/0084; B02C18/0092
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A SEWAGE TREATMENT UNIT COMPRISING AN UPPER AND A LOWER CHAMBER, VALVE MEANS CONTROLLING PASSAGE OF SEWAGE FROM SAID UPPER CHAMBER TO SAID LOWER CHAMBER, A SEWAGE INLET TO SAID UPPER CHAMBER, A SEWAGE OUTLET FROM SAID LOWER CHAMBER, A CENTRAL VERTICAL DRIVE SHAFT EXTENDING IN BOTH SAID UPPER AND LOWER CHAMBERS, POWER MEANS FOR DRIVING SAID SHAFT, SEWAGE COMMINUTING MEANS DRIVEN BY SAID SHAFT WITHIN SAID UPPER CHAMBER, AND A PUMP DRIVEN BY SAID SHAFT TO DISCHARGE TREATED SEWAGE THROUGH SAID OUTLET FROM SAID LOWER CHAMBER.
Claim 2
Independent Claim
87 words
A METHOD OF BATCH TREATING SEWAGE COMPRISING DELIVERING SEWAGE AND A SEWAGE TREATING MATERIAL TO A COMMINUTING CHAMBER, COMMINUTING SAID SEWAGE WITHIN SAID CHAMBER IN THE PRESENCE OF SAID TREATING MATERIAL, THEREAFTER DELIVERING SAID COMMINUTED, PARTIALLY TREATED SEWAGE TOGETHER WITH SAID TREATING MATERIAL TO A SECOND CHAMBER FOR FURTHER TREATMENT OF THE COMMINUTED SEWAGE BY SUCH MATERIAL, AND SUBSEQUENTLY DISCHARGING AND FULLY TREATED SEWAGE FROM SAID SECOND CHAMBER SIMULTANEOUSLY WITH THE DELIVERING OF FURTHER SEWAGE TREATING MATERIAL TO SAID COMMINUTING CHAMBER FOR COMMINUTING SUCH FURTHER SEWAGE THEREIN.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-23 | 1968-08-24 | 1969-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-23 | 1972-08-24 | 1973-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-23 | 1976-08-24 | 1977-02-23 | $7700.00 | Window Closed / Lapsed |